This could be a symptom of Rosacea. Rosacea is a chronic skin condition found often in people with lighter skin that can worsen over time if not treated by a qualified dermatologist.
these reactions could be caused by some sort of allergic reaction or sensitivity to an outside thing. The irritation could be caused by something in the air.
This is most likely ringworms also called tenae. This is a bacterial skin infection that you get from the dirt, an animal, or a person. This infection only lives on the skin.
There are many things and you really should see a doctor. Could be as common as eczema, but could be as worrysome as Lymes disease or a vasculitis. Psoriasis would not be uncommon too.